<< I have a CR2100EZ and I've gotten coasters when burning repeatedly. I burned 20-30 CD-R's in a row. By the time I got to the 20th, the media was coming hot off the tray and I started getting lockups while burning with Nero and the drive refusing to recognize CD-R media. The other problem is the long time to recognize media as stated before and the loud fan noise when reading any CD media in the drive. >>
The 2100EZ doesn't have buffer underrun protection, aka "Burnproof". All it has is the 8MB buffer. That's probably why you get coasters, if you multitask and do other things while burning. The 2200EZ introduced the buffer underrun protection. The 2200EZ is quiet in my system. I do hear it rev up, but it doesn't rattle like some drives. But like I said before, it does take a while to recognize media. That's why I only use it for burning.